We all have that person who just has everything you can think of, so when a holiday like Valentine's day comes around...we just do not know what to do. I have collected some experiences which you could share with that person. This is fail proof, at least I think so.
1. Edible Arrangements (link), one of the most adorable show of appreciation. Just make sure you don't get something they are allergic to
2. Take that person to a drive in movie, it's always nice to have the privacy of your own car. You could also do dinner and a movie, remember to bring flowers.
3. Go old school and write them a love/appreciation letter, they will probably keep it until well forever.